500 
INDEX 
Page. 
C. K. & N. mine, location of. 5,148,355 
metasomatism in. 188 
minerals in. 118,120,121,125,175 
ore of. 174,177,356-357 
production of. 355 
water in. 358 
veins of, character of. 159,162,181-182,355-358 
structure of, figure showing. 181 
view of. 350 
workings of. 355 
C. K. & N. Mining Company, mines of. 355 
C. K. & N. vein, location and description of. 159, 
162,181-182,351-358 
minerals in, character of. 159,162,166,174,176,177,178 
Clyde mine, water level in. 240,242 
Coal, analyses of. 31 
occurrence of. 31,114,129,317,319 
evidence from. 31,38 
Cobb vein, location and description of... 159,164,206,302,304 
Cocking, Henry, development by. 130 
C. O. D. mine, description of. 272 
history of. 272 
location of. 5,104,272 
minerals in. 122,200,272 
ore from, analysis of. 117 
ore bodies in. 207 
oxidation in. 198,200 
production of. 148 
prospects near. 272-273 
rocks in. 29 
veins in... 206,272 
workings of, description of. 272 
Coin vein, location and description of. 164, 
166-167,485,488-492 
Colloid solutions, diffusion of. 230-231 
Colorado, cooperation with. 1,11 
Colorado Boss claim, location and description of.... 287,330 
Colorado Boss vein, character of. 309-310 
Colorado City mine, workings of. 433,437,442 
Coloradoite, description of... 115 
Colorado Springs, reduction plants at. 139 
temperature at. 269 
Columbia claim, location and description of. 349,350 
Columbine tunnel, location of... 488 
Columbus claim, location of. 349 
Combination claim, location of.... 374 
Comet incline, location of. 391 
Contact vein, character of. 160 
Conundrum mine, description of. 297-305 
dikes in..■. 36,301,362 
gas in. 254-255,250-257,258,262-208 
analyses of... 255,263,264 
geology of. 300-301 
location of. 5,146,298 
minerals in. 121,174,193 
ore of.!. 171,302-305 
production of. 148 
relations of Midget mine and, figure showing. 300 
rocks in. 25 
temperatures In. 270 
vein in. 302,304-305 
plate showing. 160 
ventilation of, figure showing. 263 
view of. 18 
water in. 305 
workings in, plan showing.,. 299 
Conundrum vein, location and description of. 165, 
298,302-305 
Page. 
Copper, description of. H5 
occurrence of. 114,171,172,225,307,372,402,414 
value of. 170 
Copper Mountain, rocks on. 22,30,34,57,97,98 
Copper Mountain mine, location and description of— 280 
Cottontail claim, location of. 291 
Countryman and Jaquith, on El Paso tunnel. 237 
Cow Mountain, prospects on. 151,283 
rocks of.:. 58 
Creede, mine gas at. 259-260 
mine gas at, analysis of. 260 
Creston Big Eight Mining Company, mine of. 274 
Creswick, Victoria, gas in mines at. 259 
gas in mines at, analysis of. 259 
Cripple Creek, lower part of, rocks and mines on. 496 
Cripple Creek (P. O.), elevations in. 12,13-14 
history of. 132 
mines at and near. See Mines. 
placers in and near. 152 
reduction plants at. 139 
temperature at. 269 
views of. 18 
Cripple Creek and Gold Hill tunnel, location and de¬ 
scription of. 291,292 
rocks in..*. 293 
Cripple Creek granite, analysis of. 101-102 
description of. 3,23-24,45-46 
occurrence of. 20,23,29,314 
petrology of. 46-47 
Cripple Creek Homestake Mining and Reduction Com¬ 
pany, property of. 285-286 
Cripple Creek volcano. See Volcano; Volcanic effects; 
Volcanic cone. 
Cross, Whitman, on breccia. 20-21,22 
on Cripple Creek geology, summary of. 18-19 
on crystalline rocks. 3,43 
on High Park lake beds.’. 22 
on igneous rocks. 1-2,18-19,21,56 
on metasomatism. 195,196 
on schists. 52 
work of. 1,11, IS, 41-42 
Cross veins, location and description of. 472,474,475 
Crystalline rocks (prevolcanic), description and petrol¬ 
ogy of. 42-56 
mineralization in. 24 ' 
occurrence and character of. 23-24 
Crystallization, products of.:. 101 
Cumberland claim, location of. 298 
Cyanide process, description of. 140 
employment and cost of. 4-5,139-140 
plants for, location of. 139 
D. 
Damon mine, description of. 289-290 
dipin. 156 
location of. 149,289 
ore of. 210,290 
production of. 289 
rocks in. 289 
veins in. 289-290 
figure showing. 210 
workings in. 289 
figure showing. 210 
Damon vein, location.and description of. 290 
Dante Gold Mining Company, mine of. 370 
Dante mine, description of. 370-372 
dikes in. 371,372,38i 
